table {
    width: 600px;
    border: 1px solid rgba(0, 0, 0, .5);
    border-radius: 5px;
    box-shadow: 5px 5px 15px #000;
    border-collapse: collapse; /*合并相邻边框*/
    overflow: hidden;
}

th, td {
    padding: 5px;
    border: 1px solid rgba(0, 0, 0, .5);
}

